Home / 99,470.16-137,272.32-56,447.28

Finding the Fourth Proportional to 99,470.16, 137,272.32 and 56,447.28

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Solution

The fourth proportional to 99,470.16, 137,272.32 and 56,447.28 is: 77,899.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,470.16 : 137,272.32 = 56,447.28 : x
  2. Step 2: Convert to fraction form
    99,470.16/137,272.32 = 56,447.28/x
  3. Step 3: Cross multiply
    99,470.16x = 137,272.32 × 56,447.28
  4. Step 4: Simplify right side
    99,470.16x = 7,748,649,083.29
  5. Step 5: Solve for x
    x = 7,748,649,083.29/99,470.16
  6. Step 6: Final answer
    x = 77,899.23

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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.