Home / 78,169,869.60-117,254,804.40-53,983,399.20

Finding the Fourth Proportional to 78,169,869.60, 117,254,804.40 and 53,983,399.20

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Solution

The fourth proportional to 78,169,869.60, 117,254,804.40 and 53,983,399.20 is: 80,975,098.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,169,869.60 : 117,254,804.40 = 53,983,399.20 : x
  2. Step 2: Convert to fraction form
    78,169,869.60/117,254,804.40 = 53,983,399.20/x
  3. Step 3: Cross multiply
    78,169,869.60x = 117,254,804.40 × 53,983,399.20
  4. Step 4: Simplify right side
    78,169,869.60x = 6,329,812,914,043,117
  5. Step 5: Solve for x
    x = 6,329,812,914,043,117/78,169,869.60
  6. Step 6: Final answer
    x = 80,975,098.80

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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.