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Finding the Fourth Proportional to 78,807.84, 118,145.22 and 36,666.16

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Solution

The fourth proportional to 78,807.84, 118,145.22 and 36,666.16 is: 54,968.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,807.84 : 118,145.22 = 36,666.16 : x
  2. Step 2: Convert to fraction form
    78,807.84/118,145.22 = 36,666.16/x
  3. Step 3: Cross multiply
    78,807.84x = 118,145.22 × 36,666.16
  4. Step 4: Simplify right side
    78,807.84x = 4,331,931,539.76
  5. Step 5: Solve for x
    x = 4,331,931,539.76/78,807.84
  6. Step 6: Final answer
    x = 54,968.28

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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.