Home / 76,119.24-105,041.95-42,129.18

Finding the Fourth Proportional to 76,119.24, 105,041.95 and 42,129.18

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Solution

The fourth proportional to 76,119.24, 105,041.95 and 42,129.18 is: 58,136.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,119.24 : 105,041.95 = 42,129.18 : x
  2. Step 2: Convert to fraction form
    76,119.24/105,041.95 = 42,129.18/x
  3. Step 3: Cross multiply
    76,119.24x = 105,041.95 × 42,129.18
  4. Step 4: Simplify right side
    76,119.24x = 4,425,331,113.78
  5. Step 5: Solve for x
    x = 4,425,331,113.78/76,119.24
  6. Step 6: Final answer
    x = 58,136.82

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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.