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Finding the Fourth Proportional to 58,416.60, 87,628.02 and 18,970.80

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Solution

The fourth proportional to 58,416.60, 87,628.02 and 18,970.80 is: 28,457.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,416.60 : 87,628.02 = 18,970.80 : x
  2. Step 2: Convert to fraction form
    58,416.60/87,628.02 = 18,970.80/x
  3. Step 3: Cross multiply
    58,416.60x = 87,628.02 × 18,970.80
  4. Step 4: Simplify right side
    58,416.60x = 1,662,373,641.82
  5. Step 5: Solve for x
    x = 1,662,373,641.82/58,416.60
  6. Step 6: Final answer
    x = 28,457.21

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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.