Home / 78,298,411.60-117,447,617.40-54,111,941.20

Finding the Fourth Proportional to 78,298,411.60, 117,447,617.40 and 54,111,941.20

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Solution

The fourth proportional to 78,298,411.60, 117,447,617.40 and 54,111,941.20 is: 81,167,911.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,298,411.60 : 117,447,617.40 = 54,111,941.20 : x
  2. Step 2: Convert to fraction form
    78,298,411.60/117,447,617.40 = 54,111,941.20/x
  3. Step 3: Cross multiply
    78,298,411.60x = 117,447,617.40 × 54,111,941.20
  4. Step 4: Simplify right side
    78,298,411.60x = 6,355,318,566,828,898
  5. Step 5: Solve for x
    x = 6,355,318,566,828,898/78,298,411.60
  6. Step 6: Final answer
    x = 81,167,911.80

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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.