Home / 56,397.49-77,825.17-30,898.78

Finding the Fourth Proportional to 56,397.49, 77,825.17 and 30,898.78

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Solution

The fourth proportional to 56,397.49, 77,825.17 and 30,898.78 is: 42,638.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,397.49 : 77,825.17 = 30,898.78 : x
  2. Step 2: Convert to fraction form
    56,397.49/77,825.17 = 30,898.78/x
  3. Step 3: Cross multiply
    56,397.49x = 77,825.17 × 30,898.78
  4. Step 4: Simplify right side
    56,397.49x = 2,404,702,806.29
  5. Step 5: Solve for x
    x = 2,404,702,806.29/56,397.49
  6. Step 6: Final answer
    x = 42,638.47

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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.