Home / 78,520.19-108,385.70-46,688.94

Finding the Fourth Proportional to 78,520.19, 108,385.70 and 46,688.94

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Solution

The fourth proportional to 78,520.19, 108,385.70 and 46,688.94 is: 64,447.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,520.19 : 108,385.70 = 46,688.94 : x
  2. Step 2: Convert to fraction form
    78,520.19/108,385.70 = 46,688.94/x
  3. Step 3: Cross multiply
    78,520.19x = 108,385.70 × 46,688.94
  4. Step 4: Simplify right side
    78,520.19x = 5,060,413,210.71
  5. Step 5: Solve for x
    x = 5,060,413,210.71/78,520.19
  6. Step 6: Final answer
    x = 64,447.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.