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Finding the Fourth Proportional to 55,866.48, 77,073.76 and 31,980.28

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Solution

The fourth proportional to 55,866.48, 77,073.76 and 31,980.28 is: 44,120.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    55,866.48 : 77,073.76 = 31,980.28 : x
  2. Step 2: Convert to fraction form
    55,866.48/77,073.76 = 31,980.28/x
  3. Step 3: Cross multiply
    55,866.48x = 77,073.76 × 31,980.28
  4. Step 4: Simplify right side
    55,866.48x = 2,464,840,425.45
  5. Step 5: Solve for x
    x = 2,464,840,425.45/55,866.48
  6. Step 6: Final answer
    x = 44,120.20

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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.