Home / 72,549,172.89-100,117,169.75-39,509,973.44

Finding the Fourth Proportional to 72,549,172.89, 100,117,169.75 and 39,509,973.44

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Solution

The fourth proportional to 72,549,172.89, 100,117,169.75 and 39,509,973.44 is: 54,523,388.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,549,172.89 : 100,117,169.75 = 39,509,973.44 : x
  2. Step 2: Convert to fraction form
    72,549,172.89/100,117,169.75 = 39,509,973.44/x
  3. Step 3: Cross multiply
    72,549,172.89x = 100,117,169.75 × 39,509,973.44
  4. Step 4: Simplify right side
    72,549,172.89x = 3,955,626,717,710,471
  5. Step 5: Solve for x
    x = 3,955,626,717,710,471/72,549,172.89
  6. Step 6: Final answer
    x = 54,523,388.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.