Home / 78,507.04-117,666.75-28,528.62

Finding the Fourth Proportional to 78,507.04, 117,666.75 and 28,528.62

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Solution

The fourth proportional to 78,507.04, 117,666.75 and 28,528.62 is: 42,758.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,507.04 : 117,666.75 = 28,528.62 : x
  2. Step 2: Convert to fraction form
    78,507.04/117,666.75 = 28,528.62/x
  3. Step 3: Cross multiply
    78,507.04x = 117,666.75 × 28,528.62
  4. Step 4: Simplify right side
    78,507.04x = 3,356,869,748.35
  5. Step 5: Solve for x
    x = 3,356,869,748.35/78,507.04
  6. Step 6: Final answer
    x = 42,758.84

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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.