Home / 78,249,740.18-117,937,057.70-67,450,276.77

Finding the Fourth Proportional to 78,249,740.18, 117,937,057.70 and 67,450,276.77

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Solution

The fourth proportional to 78,249,740.18, 117,937,057.70 and 67,450,276.77 is: 101,660,237.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,249,740.18 : 117,937,057.70 = 67,450,276.77 : x
  2. Step 2: Convert to fraction form
    78,249,740.18/117,937,057.70 = 67,450,276.77/x
  3. Step 3: Cross multiply
    78,249,740.18x = 117,937,057.70 × 67,450,276.77
  4. Step 4: Simplify right side
    78,249,740.18x = 7,954,887,183,030,821
  5. Step 5: Solve for x
    x = 7,954,887,183,030,821/78,249,740.18
  6. Step 6: Final answer
    x = 101,660,237.66

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.