Home / 78,725,961.65-118,080,969.34-21,224,045.45

Finding the Fourth Proportional to 78,725,961.65, 118,080,969.34 and 21,224,045.45

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Solution

The fourth proportional to 78,725,961.65, 118,080,969.34 and 21,224,045.45 is: 31,833,918.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,725,961.65 : 118,080,969.34 = 21,224,045.45 : x
  2. Step 2: Convert to fraction form
    78,725,961.65/118,080,969.34 = 21,224,045.45/x
  3. Step 3: Cross multiply
    78,725,961.65x = 118,080,969.34 × 21,224,045.45
  4. Step 4: Simplify right side
    78,725,961.65x = 2,506,155,860,052,216.50
  5. Step 5: Solve for x
    x = 2,506,155,860,052,216.50/78,725,961.65
  6. Step 6: Final answer
    x = 31,833,918.67

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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.