Home / 81,240.98-112,104.81-45,430.07

Finding the Fourth Proportional to 81,240.98, 112,104.81 and 45,430.07

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Solution

The fourth proportional to 81,240.98, 112,104.81 and 45,430.07 is: 62,689.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,240.98 : 112,104.81 = 45,430.07 : x
  2. Step 2: Convert to fraction form
    81,240.98/112,104.81 = 45,430.07/x
  3. Step 3: Cross multiply
    81,240.98x = 112,104.81 × 45,430.07
  4. Step 4: Simplify right side
    81,240.98x = 5,092,928,805.11
  5. Step 5: Solve for x
    x = 5,092,928,805.11/81,240.98
  6. Step 6: Final answer
    x = 62,689.16

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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.