Home / 70,418.16-97,176.24-42,123.78

Finding the Fourth Proportional to 70,418.16, 97,176.24 and 42,123.78

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Solution

The fourth proportional to 70,418.16, 97,176.24 and 42,123.78 is: 58,130.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,418.16 : 97,176.24 = 42,123.78 : x
  2. Step 2: Convert to fraction form
    70,418.16/97,176.24 = 42,123.78/x
  3. Step 3: Cross multiply
    70,418.16x = 97,176.24 × 42,123.78
  4. Step 4: Simplify right side
    70,418.16x = 4,093,430,554.99
  5. Step 5: Solve for x
    x = 4,093,430,554.99/70,418.16
  6. Step 6: Final answer
    x = 58,130.33

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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.