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Finding the Fourth Proportional to 78,762.48, 118,143.46 and 19,598.14

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Solution

The fourth proportional to 78,762.48, 118,143.46 and 19,598.14 is: 29,397.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,762.48 : 118,143.46 = 19,598.14 : x
  2. Step 2: Convert to fraction form
    78,762.48/118,143.46 = 19,598.14/x
  3. Step 3: Cross multiply
    78,762.48x = 118,143.46 × 19,598.14
  4. Step 4: Simplify right side
    78,762.48x = 2,315,392,069.16
  5. Step 5: Solve for x
    x = 2,315,392,069.16/78,762.48
  6. Step 6: Final answer
    x = 29,397.15

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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.