Home / 45,143.46-67,238.55-42,772.59

Finding the Fourth Proportional to 45,143.46, 67,238.55 and 42,772.59

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Solution

The fourth proportional to 45,143.46, 67,238.55 and 42,772.59 is: 63,707.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,143.46 : 67,238.55 = 42,772.59 : x
  2. Step 2: Convert to fraction form
    45,143.46/67,238.55 = 42,772.59/x
  3. Step 3: Cross multiply
    45,143.46x = 67,238.55 × 42,772.59
  4. Step 4: Simplify right side
    45,143.46x = 2,875,966,931.34
  5. Step 5: Solve for x
    x = 2,875,966,931.34/45,143.46
  6. Step 6: Final answer
    x = 63,707.28

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.