Home / 66,475.70-99,713.55-42,856.10

Finding the Fourth Proportional to 66,475.70, 99,713.55 and 42,856.10

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Solution

The fourth proportional to 66,475.70, 99,713.55 and 42,856.10 is: 64,284.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,475.70 : 99,713.55 = 42,856.10 : x
  2. Step 2: Convert to fraction form
    66,475.70/99,713.55 = 42,856.10/x
  3. Step 3: Cross multiply
    66,475.70x = 99,713.55 × 42,856.10
  4. Step 4: Simplify right side
    66,475.70x = 4,273,333,870.16
  5. Step 5: Solve for x
    x = 4,273,333,870.16/66,475.70
  6. Step 6: Final answer
    x = 64,284.15

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.