Home / 77,613.28-116,328.79-76,782.22

Finding the Fourth Proportional to 77,613.28, 116,328.79 and 76,782.22

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Solution

The fourth proportional to 77,613.28, 116,328.79 and 76,782.22 is: 115,083.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,613.28 : 116,328.79 = 76,782.22 : x
  2. Step 2: Convert to fraction form
    77,613.28/116,328.79 = 76,782.22/x
  3. Step 3: Cross multiply
    77,613.28x = 116,328.79 × 76,782.22
  4. Step 4: Simplify right side
    77,613.28x = 8,931,982,746.11
  5. Step 5: Solve for x
    x = 8,931,982,746.11/77,613.28
  6. Step 6: Final answer
    x = 115,083.18

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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.