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Finding the Fourth Proportional to 72,862.80, 100,547.16 and 41,031.12

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Solution

The fourth proportional to 72,862.80, 100,547.16 and 41,031.12 is: 56,620.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,862.80 : 100,547.16 = 41,031.12 : x
  2. Step 2: Convert to fraction form
    72,862.80/100,547.16 = 41,031.12/x
  3. Step 3: Cross multiply
    72,862.80x = 100,547.16 × 41,031.12
  4. Step 4: Simplify right side
    72,862.80x = 4,125,562,587.62
  5. Step 5: Solve for x
    x = 4,125,562,587.62/72,862.80
  6. Step 6: Final answer
    x = 56,620.97

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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.