Home / 78,808,807.20-118,014,145.20-51,735,885.60

Finding the Fourth Proportional to 78,808,807.20, 118,014,145.20 and 51,735,885.60

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Solution

The fourth proportional to 78,808,807.20, 118,014,145.20 and 51,735,885.60 is: 77,473,147.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,808,807.20 : 118,014,145.20 = 51,735,885.60 : x
  2. Step 2: Convert to fraction form
    78,808,807.20/118,014,145.20 = 51,735,885.60/x
  3. Step 3: Cross multiply
    78,808,807.20x = 118,014,145.20 × 51,735,885.60
  4. Step 4: Simplify right side
    78,808,807.20x = 6,105,566,315,248,989
  5. Step 5: Solve for x
    x = 6,105,566,315,248,989/78,808,807.20
  6. Step 6: Final answer
    x = 77,473,147.13

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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.