Home / 77,579.10-116,368.65-72,330.30

Finding the Fourth Proportional to 77,579.10, 116,368.65 and 72,330.30

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Solution

The fourth proportional to 77,579.10, 116,368.65 and 72,330.30 is: 108,495.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,579.10 : 116,368.65 = 72,330.30 : x
  2. Step 2: Convert to fraction form
    77,579.10/116,368.65 = 72,330.30/x
  3. Step 3: Cross multiply
    77,579.10x = 116,368.65 × 72,330.30
  4. Step 4: Simplify right side
    77,579.10x = 8,416,979,365.10
  5. Step 5: Solve for x
    x = 8,416,979,365.10/77,579.10
  6. Step 6: Final answer
    x = 108,495.45

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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.