Home / 30,525,779.60-42,116,389.80-18,298,175.12

Finding the Fourth Proportional to 30,525,779.60, 42,116,389.80 and 18,298,175.12

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Solution

The fourth proportional to 30,525,779.60, 42,116,389.80 and 18,298,175.12 is: 25,245,975.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    30,525,779.60 : 42,116,389.80 = 18,298,175.12 : x
  2. Step 2: Convert to fraction form
    30,525,779.60/42,116,389.80 = 18,298,175.12/x
  3. Step 3: Cross multiply
    30,525,779.60x = 42,116,389.80 × 18,298,175.12
  4. Step 4: Simplify right side
    30,525,779.60x = 770,653,075,982,581.75
  5. Step 5: Solve for x
    x = 770,653,075,982,581.75/30,525,779.60
  6. Step 6: Final answer
    x = 25,245,975.24

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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.