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Finding the Fourth Proportional to 93,030.60, 139,578.30 and 40,477.80

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Solution

The fourth proportional to 93,030.60, 139,578.30 and 40,477.80 is: 60,730.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,030.60 : 139,578.30 = 40,477.80 : x
  2. Step 2: Convert to fraction form
    93,030.60/139,578.30 = 40,477.80/x
  3. Step 3: Cross multiply
    93,030.60x = 139,578.30 × 40,477.80
  4. Step 4: Simplify right side
    93,030.60x = 5,649,822,511.74
  5. Step 5: Solve for x
    x = 5,649,822,511.74/93,030.60
  6. Step 6: Final answer
    x = 60,730.80

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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.