Home / 78,396,986.60-117,371,531.10-70,334,829.80

Finding the Fourth Proportional to 78,396,986.60, 117,371,531.10 and 70,334,829.80

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Solution

The fourth proportional to 78,396,986.60, 117,371,531.10 and 70,334,829.80 is: 105,301,326.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,396,986.60 : 117,371,531.10 = 70,334,829.80 : x
  2. Step 2: Convert to fraction form
    78,396,986.60/117,371,531.10 = 70,334,829.80/x
  3. Step 3: Cross multiply
    78,396,986.60x = 117,371,531.10 × 70,334,829.80
  4. Step 4: Simplify right side
    78,396,986.60x = 8,255,306,663,283,906
  5. Step 5: Solve for x
    x = 8,255,306,663,283,906/78,396,986.60
  6. Step 6: Final answer
    x = 105,301,326.25

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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.