Home / 78,697,001.80-118,045,502.70-70,406,522.20

Finding the Fourth Proportional to 78,697,001.80, 118,045,502.70 and 70,406,522.20

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Solution

The fourth proportional to 78,697,001.80, 118,045,502.70 and 70,406,522.20 is: 105,609,783.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,697,001.80 : 118,045,502.70 = 70,406,522.20 : x
  2. Step 2: Convert to fraction form
    78,697,001.80/118,045,502.70 = 70,406,522.20/x
  3. Step 3: Cross multiply
    78,697,001.80x = 118,045,502.70 × 70,406,522.20
  4. Step 4: Simplify right side
    78,697,001.80x = 8,311,173,306,457,711
  5. Step 5: Solve for x
    x = 8,311,173,306,457,711/78,697,001.80
  6. Step 6: Final answer
    x = 105,609,783.30

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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.