Home / 78,919,729.20-118,211,632.20-65,482,801.20

Finding the Fourth Proportional to 78,919,729.20, 118,211,632.20 and 65,482,801.20

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Solution

The fourth proportional to 78,919,729.20, 118,211,632.20 and 65,482,801.20 is: 98,084,837.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,919,729.20 : 118,211,632.20 = 65,482,801.20 : x
  2. Step 2: Convert to fraction form
    78,919,729.20/118,211,632.20 = 65,482,801.20/x
  3. Step 3: Cross multiply
    78,919,729.20x = 118,211,632.20 × 65,482,801.20
  4. Step 4: Simplify right side
    78,919,729.20x = 7,740,828,810,880,119
  5. Step 5: Solve for x
    x = 7,740,828,810,880,119/78,919,729.20
  6. Step 6: Final answer
    x = 98,084,837.46

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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.