Home / 70,408,005.60-105,612,008.40-68,056,543.20

Finding the Fourth Proportional to 70,408,005.60, 105,612,008.40 and 68,056,543.20

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Solution

The fourth proportional to 70,408,005.60, 105,612,008.40 and 68,056,543.20 is: 102,084,814.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,408,005.60 : 105,612,008.40 = 68,056,543.20 : x
  2. Step 2: Convert to fraction form
    70,408,005.60/105,612,008.40 = 68,056,543.20/x
  3. Step 3: Cross multiply
    70,408,005.60x = 105,612,008.40 × 68,056,543.20
  4. Step 4: Simplify right side
    70,408,005.60x = 7,187,588,212,113,364
  5. Step 5: Solve for x
    x = 7,187,588,212,113,364/70,408,005.60
  6. Step 6: Final answer
    x = 102,084,814.80

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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.