Home / 78,697,005.30-118,045,507.95-70,406,525.70

Finding the Fourth Proportional to 78,697,005.30, 118,045,507.95 and 70,406,525.70

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Solution

The fourth proportional to 78,697,005.30, 118,045,507.95 and 70,406,525.70 is: 105,609,788.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,697,005.30 : 118,045,507.95 = 70,406,525.70 : x
  2. Step 2: Convert to fraction form
    78,697,005.30/118,045,507.95 = 70,406,525.70/x
  3. Step 3: Cross multiply
    78,697,005.30x = 118,045,507.95 × 70,406,525.70
  4. Step 4: Simplify right side
    78,697,005.30x = 8,311,174,089,251,230
  5. Step 5: Solve for x
    x = 8,311,174,089,251,230/78,697,005.30
  6. Step 6: Final answer
    x = 105,609,788.55

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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.