Home / 74,130.71-102,302.12-42,302.57

Finding the Fourth Proportional to 74,130.71, 102,302.12 and 42,302.57

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Solution

The fourth proportional to 74,130.71, 102,302.12 and 42,302.57 is: 58,378.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,130.71 : 102,302.12 = 42,302.57 : x
  2. Step 2: Convert to fraction form
    74,130.71/102,302.12 = 42,302.57/x
  3. Step 3: Cross multiply
    74,130.71x = 102,302.12 × 42,302.57
  4. Step 4: Simplify right side
    74,130.71x = 4,327,642,186.69
  5. Step 5: Solve for x
    x = 4,327,642,186.69/74,130.71
  6. Step 6: Final answer
    x = 58,378.54

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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.