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Finding the Fourth Proportional to 56,275.52, 77,656.97 and 30,776.78

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Solution

The fourth proportional to 56,275.52, 77,656.97 and 30,776.78 is: 42,470.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,275.52 : 77,656.97 = 30,776.78 : x
  2. Step 2: Convert to fraction form
    56,275.52/77,656.97 = 30,776.78/x
  3. Step 3: Cross multiply
    56,275.52x = 77,656.97 × 30,776.78
  4. Step 4: Simplify right side
    56,275.52x = 2,390,030,938.99
  5. Step 5: Solve for x
    x = 2,390,030,938.99/56,275.52
  6. Step 6: Final answer
    x = 42,470.17

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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.