Home / 78,501.60-117,752.40-64,594.36

Finding the Fourth Proportional to 78,501.60, 117,752.40 and 64,594.36

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Solution

The fourth proportional to 78,501.60, 117,752.40 and 64,594.36 is: 96,891.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,501.60 : 117,752.40 = 64,594.36 : x
  2. Step 2: Convert to fraction form
    78,501.60/117,752.40 = 64,594.36/x
  3. Step 3: Cross multiply
    78,501.60x = 117,752.40 × 64,594.36
  4. Step 4: Simplify right side
    78,501.60x = 7,606,140,916.46
  5. Step 5: Solve for x
    x = 7,606,140,916.46/78,501.60
  6. Step 6: Final answer
    x = 96,891.54

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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.