Home / 51,430.10-77,145.15-45,986.90

Finding the Fourth Proportional to 51,430.10, 77,145.15 and 45,986.90

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Solution

The fourth proportional to 51,430.10, 77,145.15 and 45,986.90 is: 68,980.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    51,430.10 : 77,145.15 = 45,986.90 : x
  2. Step 2: Convert to fraction form
    51,430.10/77,145.15 = 45,986.90/x
  3. Step 3: Cross multiply
    51,430.10x = 77,145.15 × 45,986.90
  4. Step 4: Simplify right side
    51,430.10x = 3,547,666,298.54
  5. Step 5: Solve for x
    x = 3,547,666,298.54/51,430.10
  6. Step 6: Final answer
    x = 68,980.35

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1.5x scale

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.