Home / 77,315.28-115,926.36-42,206.16

Finding the Fourth Proportional to 77,315.28, 115,926.36 and 42,206.16

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Solution

The fourth proportional to 77,315.28, 115,926.36 and 42,206.16 is: 63,283.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,315.28 : 115,926.36 = 42,206.16 : x
  2. Step 2: Convert to fraction form
    77,315.28/115,926.36 = 42,206.16/x
  3. Step 3: Cross multiply
    77,315.28x = 115,926.36 × 42,206.16
  4. Step 4: Simplify right side
    77,315.28x = 4,892,806,498.38
  5. Step 5: Solve for x
    x = 4,892,806,498.38/77,315.28
  6. Step 6: Final answer
    x = 63,283.82

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.