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Finding the Fourth Proportional to 81,547.80, 112,526.92 and 45,730.40

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Solution

The fourth proportional to 81,547.80, 112,526.92 and 45,730.40 is: 63,102.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,547.80 : 112,526.92 = 45,730.40 : x
  2. Step 2: Convert to fraction form
    81,547.80/112,526.92 = 45,730.40/x
  3. Step 3: Cross multiply
    81,547.80x = 112,526.92 × 45,730.40
  4. Step 4: Simplify right side
    81,547.80x = 5,145,901,062.37
  5. Step 5: Solve for x
    x = 5,145,901,062.37/81,547.80
  6. Step 6: Final answer
    x = 63,102.88

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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.