Home / 81,248.60-112,122.28-45,438.20

Finding the Fourth Proportional to 81,248.60, 112,122.28 and 45,438.20

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Solution

The fourth proportional to 81,248.60, 112,122.28 and 45,438.20 is: 62,704.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,248.60 : 112,122.28 = 45,438.20 : x
  2. Step 2: Convert to fraction form
    81,248.60/112,122.28 = 45,438.20/x
  3. Step 3: Cross multiply
    81,248.60x = 112,122.28 × 45,438.20
  4. Step 4: Simplify right side
    81,248.60x = 5,094,634,583.10
  5. Step 5: Solve for x
    x = 5,094,634,583.10/81,248.60
  6. Step 6: Final answer
    x = 62,704.28

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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.