Home / 78,421,683.60-117,744,499.80-44,409,459.60

Finding the Fourth Proportional to 78,421,683.60, 117,744,499.80 and 44,409,459.60

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Solution

The fourth proportional to 78,421,683.60, 117,744,499.80 and 44,409,459.60 is: 66,677,599.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,421,683.60 : 117,744,499.80 = 44,409,459.60 : x
  2. Step 2: Convert to fraction form
    78,421,683.60/117,744,499.80 = 44,409,459.60/x
  3. Step 3: Cross multiply
    78,421,683.60x = 117,744,499.80 × 44,409,459.60
  4. Step 4: Simplify right side
    78,421,683.60x = 5,228,969,606,990,308
  5. Step 5: Solve for x
    x = 5,228,969,606,990,308/78,421,683.60
  6. Step 6: Final answer
    x = 66,677,599.45

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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.