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Finding the Fourth Proportional to 86,901.61, 130,401.72 and 46,920.06

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Solution

The fourth proportional to 86,901.61, 130,401.72 and 46,920.06 is: 70,406.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,901.61 : 130,401.72 = 46,920.06 : x
  2. Step 2: Convert to fraction form
    86,901.61/130,401.72 = 46,920.06/x
  3. Step 3: Cross multiply
    86,901.61x = 130,401.72 × 46,920.06
  4. Step 4: Simplify right side
    86,901.61x = 6,118,456,526.50
  5. Step 5: Solve for x
    x = 6,118,456,526.50/86,901.61
  6. Step 6: Final answer
    x = 70,406.71

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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.