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Finding the Fourth Proportional to 72,444, 99,973.08 and 42,250.26

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Solution

The fourth proportional to 72,444, 99,973.08 and 42,250.26 is: 58,305.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,444 : 99,973.08 = 42,250.26 : x
  2. Step 2: Convert to fraction form
    72,444/99,973.08 = 42,250.26/x
  3. Step 3: Cross multiply
    72,444x = 99,973.08 × 42,250.26
  4. Step 4: Simplify right side
    72,444x = 4,223,888,623.00
  5. Step 5: Solve for x
    x = 4,223,888,623.00/72,444
  6. Step 6: Final answer
    x = 58,305.57

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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.