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Finding the Fourth Proportional to 56,449.40, 77,899.02 and 31,298.36

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Solution

The fourth proportional to 56,449.40, 77,899.02 and 31,298.36 is: 43,191.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    56,449.40 : 77,899.02 = 31,298.36 : x
  2. Step 2: Convert to fraction form
    56,449.40/77,899.02 = 31,298.36/x
  3. Step 3: Cross multiply
    56,449.40x = 77,899.02 × 31,298.36
  4. Step 4: Simplify right side
    56,449.40x = 2,438,111,571.61
  5. Step 5: Solve for x
    x = 2,438,111,571.61/56,449.40
  6. Step 6: Final answer
    x = 43,191.10

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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.