Home / 78,318,811.60-117,478,217.40-69,584,808.40

Finding the Fourth Proportional to 78,318,811.60, 117,478,217.40 and 69,584,808.40

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Solution

The fourth proportional to 78,318,811.60, 117,478,217.40 and 69,584,808.40 is: 104,377,212.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,318,811.60 : 117,478,217.40 = 69,584,808.40 : x
  2. Step 2: Convert to fraction form
    78,318,811.60/117,478,217.40 = 69,584,808.40/x
  3. Step 3: Cross multiply
    78,318,811.60x = 117,478,217.40 × 69,584,808.40
  4. Step 4: Simplify right side
    78,318,811.60x = 8,174,699,248,952,547
  5. Step 5: Solve for x
    x = 8,174,699,248,952,547/78,318,811.60
  6. Step 6: Final answer
    x = 104,377,212.60

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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.