Home / 89,071.28-122,859.23-57,280.40

Finding the Fourth Proportional to 89,071.28, 122,859.23 and 57,280.40

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Solution

The fourth proportional to 89,071.28, 122,859.23 and 57,280.40 is: 79,008.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,071.28 : 122,859.23 = 57,280.40 : x
  2. Step 2: Convert to fraction form
    89,071.28/122,859.23 = 57,280.40/x
  3. Step 3: Cross multiply
    89,071.28x = 122,859.23 × 57,280.40
  4. Step 4: Simplify right side
    89,071.28x = 7,037,425,838.09
  5. Step 5: Solve for x
    x = 7,037,425,838.09/89,071.28
  6. Step 6: Final answer
    x = 79,008.92

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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.