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Finding the Fourth Proportional to 93,387.60, 128,869.86 and 53,095.80

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Solution

The fourth proportional to 93,387.60, 128,869.86 and 53,095.80 is: 73,269.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,387.60 : 128,869.86 = 53,095.80 : x
  2. Step 2: Convert to fraction form
    93,387.60/128,869.86 = 53,095.80/x
  3. Step 3: Cross multiply
    93,387.60x = 128,869.86 × 53,095.80
  4. Step 4: Simplify right side
    93,387.60x = 6,842,448,312.59
  5. Step 5: Solve for x
    x = 6,842,448,312.59/93,387.60
  6. Step 6: Final answer
    x = 73,269.35

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.