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Finding the Fourth Proportional to 58,657.20, 87,985.80 and 53,300.40

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Solution

The fourth proportional to 58,657.20, 87,985.80 and 53,300.40 is: 79,950.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,657.20 : 87,985.80 = 53,300.40 : x
  2. Step 2: Convert to fraction form
    58,657.20/87,985.80 = 53,300.40/x
  3. Step 3: Cross multiply
    58,657.20x = 87,985.80 × 53,300.40
  4. Step 4: Simplify right side
    58,657.20x = 4,689,678,334.32
  5. Step 5: Solve for x
    x = 4,689,678,334.32/58,657.20
  6. Step 6: Final answer
    x = 79,950.60

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.