Home / 57,378.78-79,160.49-42,307.20

Finding the Fourth Proportional to 57,378.78, 79,160.49 and 42,307.20

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Solution

The fourth proportional to 57,378.78, 79,160.49 and 42,307.20 is: 58,367.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,378.78 : 79,160.49 = 42,307.20 : x
  2. Step 2: Convert to fraction form
    57,378.78/79,160.49 = 42,307.20/x
  3. Step 3: Cross multiply
    57,378.78x = 79,160.49 × 42,307.20
  4. Step 4: Simplify right side
    57,378.78x = 3,349,058,682.53
  5. Step 5: Solve for x
    x = 3,349,058,682.53/57,378.78
  6. Step 6: Final answer
    x = 58,367.55

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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.