Home / 78,735,916.80-118,103,875.20-65,995,718.40

Finding the Fourth Proportional to 78,735,916.80, 118,103,875.20 and 65,995,718.40

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Solution

The fourth proportional to 78,735,916.80, 118,103,875.20 and 65,995,718.40 is: 98,993,577.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,735,916.80 : 118,103,875.20 = 65,995,718.40 : x
  2. Step 2: Convert to fraction form
    78,735,916.80/118,103,875.20 = 65,995,718.40/x
  3. Step 3: Cross multiply
    78,735,916.80x = 118,103,875.20 × 65,995,718.40
  4. Step 4: Simplify right side
    78,735,916.80x = 7,794,350,089,647,944
  5. Step 5: Solve for x
    x = 7,794,350,089,647,944/78,735,916.80
  6. Step 6: Final answer
    x = 98,993,577.60

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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.