Home / 93,210.27-128,639.12-57,421.23

Finding the Fourth Proportional to 93,210.27, 128,639.12 and 57,421.23

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Solution

The fourth proportional to 93,210.27, 128,639.12 and 57,421.23 is: 79,246.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,210.27 : 128,639.12 = 57,421.23 : x
  2. Step 2: Convert to fraction form
    93,210.27/128,639.12 = 57,421.23/x
  3. Step 3: Cross multiply
    93,210.27x = 128,639.12 × 57,421.23
  4. Step 4: Simplify right side
    93,210.27x = 7,386,616,209.41
  5. Step 5: Solve for x
    x = 7,386,616,209.41/93,210.27
  6. Step 6: Final answer
    x = 79,246.81

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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.