Home / 78,287,866.18-117,430,263.65-31,600,110.03

Finding the Fourth Proportional to 78,287,866.18, 117,430,263.65 and 31,600,110.03

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Solution

The fourth proportional to 78,287,866.18, 117,430,263.65 and 31,600,110.03 is: 47,399,545.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,287,866.18 : 117,430,263.65 = 31,600,110.03 : x
  2. Step 2: Convert to fraction form
    78,287,866.18/117,430,263.65 = 31,600,110.03/x
  3. Step 3: Cross multiply
    78,287,866.18x = 117,430,263.65 × 31,600,110.03
  4. Step 4: Simplify right side
    78,287,866.18x = 3,710,809,252,191,909.50
  5. Step 5: Solve for x
    x = 3,710,809,252,191,909.50/78,287,866.18
  6. Step 6: Final answer
    x = 47,399,545.21

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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.