Home / 86,019.48-129,029.04-56,430.24

Finding the Fourth Proportional to 86,019.48, 129,029.04 and 56,430.24

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Solution

The fourth proportional to 86,019.48, 129,029.04 and 56,430.24 is: 84,645.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,019.48 : 129,029.04 = 56,430.24 : x
  2. Step 2: Convert to fraction form
    86,019.48/129,029.04 = 56,430.24/x
  3. Step 3: Cross multiply
    86,019.48x = 129,029.04 × 56,430.24
  4. Step 4: Simplify right side
    86,019.48x = 7,281,139,694.17
  5. Step 5: Solve for x
    x = 7,281,139,694.17/86,019.48
  6. Step 6: Final answer
    x = 84,645.24

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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.