Home / 77,341.12-115,782.04-42,174.16

Finding the Fourth Proportional to 77,341.12, 115,782.04 and 42,174.16

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Solution

The fourth proportional to 77,341.12, 115,782.04 and 42,174.16 is: 63,136.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,341.12 : 115,782.04 = 42,174.16 : x
  2. Step 2: Convert to fraction form
    77,341.12/115,782.04 = 42,174.16/x
  3. Step 3: Cross multiply
    77,341.12x = 115,782.04 × 42,174.16
  4. Step 4: Simplify right side
    77,341.12x = 4,883,010,280.09
  5. Step 5: Solve for x
    x = 4,883,010,280.09/77,341.12
  6. Step 6: Final answer
    x = 63,136.02

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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.