Home / 66,300.15-99,430.34-18,911.91

Finding the Fourth Proportional to 66,300.15, 99,430.34 and 18,911.91

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Solution

The fourth proportional to 66,300.15, 99,430.34 and 18,911.91 is: 28,362.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,300.15 : 99,430.34 = 18,911.91 : x
  2. Step 2: Convert to fraction form
    66,300.15/99,430.34 = 18,911.91/x
  3. Step 3: Cross multiply
    66,300.15x = 99,430.34 × 18,911.91
  4. Step 4: Simplify right side
    66,300.15x = 1,880,417,919.65
  5. Step 5: Solve for x
    x = 1,880,417,919.65/66,300.15
  6. Step 6: Final answer
    x = 28,362.20

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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.