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Finding the Fourth Proportional to 56,489.57, 77,955.65 and 31,339.07

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Solution

The fourth proportional to 56,489.57, 77,955.65 and 31,339.07 is: 43,247.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,489.57 : 77,955.65 = 31,339.07 : x
  2. Step 2: Convert to fraction form
    56,489.57/77,955.65 = 31,339.07/x
  3. Step 3: Cross multiply
    56,489.57x = 77,955.65 × 31,339.07
  4. Step 4: Simplify right side
    56,489.57x = 2,443,057,025.77
  5. Step 5: Solve for x
    x = 2,443,057,025.77/56,489.57
  6. Step 6: Final answer
    x = 43,247.93

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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.