Home / 66,477.12-91,711.24-42,617.76

Finding the Fourth Proportional to 66,477.12, 91,711.24 and 42,617.76

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Solution

The fourth proportional to 66,477.12, 91,711.24 and 42,617.76 is: 58,795.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,477.12 : 91,711.24 = 42,617.76 : x
  2. Step 2: Convert to fraction form
    66,477.12/91,711.24 = 42,617.76/x
  3. Step 3: Cross multiply
    66,477.12x = 91,711.24 × 42,617.76
  4. Step 4: Simplify right side
    66,477.12x = 3,908,527,615.62
  5. Step 5: Solve for x
    x = 3,908,527,615.62/66,477.12
  6. Step 6: Final answer
    x = 58,795.08

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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.