Home / 81,742.24-112,807.14-45,931.48

Finding the Fourth Proportional to 81,742.24, 112,807.14 and 45,931.48

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Solution

The fourth proportional to 81,742.24, 112,807.14 and 45,931.48 is: 63,387.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,742.24 : 112,807.14 = 45,931.48 : x
  2. Step 2: Convert to fraction form
    81,742.24/112,807.14 = 45,931.48/x
  3. Step 3: Cross multiply
    81,742.24x = 112,807.14 × 45,931.48
  4. Step 4: Simplify right side
    81,742.24x = 5,181,398,894.77
  5. Step 5: Solve for x
    x = 5,181,398,894.77/81,742.24
  6. Step 6: Final answer
    x = 63,387.04

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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.