Home / 78,868,480.30-118,302,720.45-65,431,552.30

Finding the Fourth Proportional to 78,868,480.30, 118,302,720.45 and 65,431,552.30

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Solution

The fourth proportional to 78,868,480.30, 118,302,720.45 and 65,431,552.30 is: 98,147,328.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,868,480.30 : 118,302,720.45 = 65,431,552.30 : x
  2. Step 2: Convert to fraction form
    78,868,480.30/118,302,720.45 = 65,431,552.30/x
  3. Step 3: Cross multiply
    78,868,480.30x = 118,302,720.45 × 65,431,552.30
  4. Step 4: Simplify right side
    78,868,480.30x = 7,740,730,640,356,454
  5. Step 5: Solve for x
    x = 7,740,730,640,356,454/78,868,480.30
  6. Step 6: Final answer
    x = 98,147,328.45

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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.