Home / 70,314.18-105,459.53-30,860.70

Finding the Fourth Proportional to 70,314.18, 105,459.53 and 30,860.70

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Solution

The fourth proportional to 70,314.18, 105,459.53 and 30,860.70 is: 46,285.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,314.18 : 105,459.53 = 30,860.70 : x
  2. Step 2: Convert to fraction form
    70,314.18/105,459.53 = 30,860.70/x
  3. Step 3: Cross multiply
    70,314.18x = 105,459.53 × 30,860.70
  4. Step 4: Simplify right side
    70,314.18x = 3,254,554,763.17
  5. Step 5: Solve for x
    x = 3,254,554,763.17/70,314.18
  6. Step 6: Final answer
    x = 46,285.90

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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.