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Finding the Fourth Proportional to 90,465.56, 124,760.76 and 56,477.20

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Solution

The fourth proportional to 90,465.56, 124,760.76 and 56,477.20 is: 77,887.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    90,465.56 : 124,760.76 = 56,477.20 : x
  2. Step 2: Convert to fraction form
    90,465.56/124,760.76 = 56,477.20/x
  3. Step 3: Cross multiply
    90,465.56x = 124,760.76 × 56,477.20
  4. Step 4: Simplify right side
    90,465.56x = 7,046,137,770.87
  5. Step 5: Solve for x
    x = 7,046,137,770.87/90,465.56
  6. Step 6: Final answer
    x = 77,887.52

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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.