Home / 77,725.80-116,502.30-42,690.60

Finding the Fourth Proportional to 77,725.80, 116,502.30 and 42,690.60

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Solution

The fourth proportional to 77,725.80, 116,502.30 and 42,690.60 is: 63,988.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,725.80 : 116,502.30 = 42,690.60 : x
  2. Step 2: Convert to fraction form
    77,725.80/116,502.30 = 42,690.60/x
  3. Step 3: Cross multiply
    77,725.80x = 116,502.30 × 42,690.60
  4. Step 4: Simplify right side
    77,725.80x = 4,973,553,088.38
  5. Step 5: Solve for x
    x = 4,973,553,088.38/77,725.80
  6. Step 6: Final answer
    x = 63,988.45

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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.